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Q5.Which of the following is true about Bus Mastering?

1. Bus Mastering is feature that enables the CPU to communicate with the peripherals faster.
2. Bus Mastering is a feature that enables the Bus controller to communicate with the peripherals directly, without going through the CPU.
3. Bus Mastering is a feature that enables the Bus Controller to communicate with other devices under constant control of CPU.
4. Bus Mastering is a feature which enables the external devices to be connected to internal PCI bus.

Correct Answer: B.

 Explanation: Bus Mastering is a feature supported by some bus architectures that enables a controller connected to the bus to communicate directly with other devices on the bus without going through the CPU. Most modern bus architectures, including PCI, support bus mastering because it improves performance.

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